Sec. 1. (a) The bureau shall classify each vehicle that is eligible to be registered under this title based on:
(1) the application submitted under IC 9-18.1-3;
(2) this title; and
(3) rules adopted by the bureau under IC 4-22-2.
(b) If the bureau is unable to classify a motor vehicle that is eligible to be registered under this title, the bureau shall classify the vehicle as a truck.
(c) If the bureau is unable to classify a vehicle without motive power that is eligible to be registered under this title, the bureau shall classify the vehicle as a trailer.
(d) The bureau shall classify a tractor that is not used with a semitrailer as a truck.